发明名称 |
Method and apparatus for updating provider domain by customer topology change notifications |
摘要 |
<p>Customer virtual local area networks (C-VLANs) connecting multiple LAN segments are set up through a provider network (12). Provider edge bridges (PEs) are coupled to customer edge bridges (CEs) to provide a transparent link between LAN segments. To determine whether a backdoor link is used in the C-VLAN topology, PEs monitor MAC address from a predetermined time after a TCN is received to determine if there are contradictory addresses or new addresses relative to the existing MAC address tables (or forwarding databases) that are indicative of a backdoor link. If so, an unlearning message is sent to bridges in the provider domain. In another embodiment, CEs set a snoop bit to indicate which TCNs must be snooped.
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申请公布号 |
EP1455510(A3) |
申请公布日期 |
2006.02.01 |
申请号 |
EP20040004177 |
申请日期 |
2004.02.25 |
申请人 |
ALCATEL |
发明人 |
ELIE-DIT-COSAQUE, DAVID;CHIRUVOLU, GIRISH;ROUYER, JESSY V.;TANCEVSKI, LJUBISA;ROSE, LAURENCE;GOODWIN, MICHELE L.;CARTIER, JEAN-FRANCOIS |
分类号 |
H04L12/46 |
主分类号 |
H04L12/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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